body,ul{
margin:  0;padding: 0;}

header{
    line-height: 45px;
    color: white;
    width: 100%;
    height: 45px;
    background-color: #b52221;
    text-align: center;
    font-size: 22px;
}
ul{
    width:  90%;
    margin: 0 auto  0 auto;
}
ul::after{
    content: "";
    display: block;
    clear: both;
}
ul li{
    list-style-type:  none;
    float: left;
    width: 33.3%;
    font-size: 0px;
    text-align:  center;
}
ul li img{
    margin: 8px;
    box-shadow:  0 0 4px #000;

}
footer{
    margin-top:  10px;
    text-align:  center;
}